Speaker grills.
In the past we've had some (rare) issues with the grill cloth coming loose from the frame. As of a couple of months ago Louis has been stapling along with gluing the grill cloth to the backside of the frame. Originally Louis was using 3M glue and suspects that was the problem, now he is using Premier glue along with the staples, so that should resolve the issue.
If you have a problem with your grill cloth coming loose from the frame within the warranty period, please return them to Omega for repair.
CR
